Data processing terminal system and transmitting and receiving method using the same

• US 8,126,390 B2
• Filed: 08/19/2008
• Issued: 02/28/2012
• Est. Priority Date: 04/01/2003
• Status: Active Grant

• Current Assignee: NEC Corporation
• Original Assignee: NEC Corporation
• Inventors: Oga, Toshiyuki
• Primary Examiner(s): NGUYEN, TUAN HOANG
• Application Number:
  US12/193,829
• Publication Number:
  US 20080317108A1
• Time in Patent Office: 1,288 Days
• Field of Search: 455/1, 455/323, 455/500, 455/502, 455/554.2, 455/556.1, 455/557
• US Class Current: 455/1
• CPC Class Codes: H04B 1/0003 Software-defined radio [SDR] systems, i.e. systems wherein components typically implemented in hardware, e.g. filters or modulators/demodulators, are implented using software, e.g. by involving an AD or DA conversion stage such that at least part of the signal processing is performed in the digital domain digital baseband systems H04L25/00; digital modulation/demodulation H04L27/00; CDMA H04B1/707; TDMA H04B7/2643; image transmission H04N5/00
• CPC Class Codes: H04B 1/036 Cooling arrangements
• CPC Class Codes: H04B 1/40 Circuits
• CPC Class Codes: H04L 7/0079 Receiver details

Abstract

An information processing terminal system includes an information processing terminal (6); and a transmitting and receiving unit (5) which is attached to the information processing terminal. The transmitting and receiving unit (5) converts a reception wave signal from a network into a reception analog baseband signal. The transmitting and receiving unit (5) converts the reception analog baseband signal into a reception digital baseband signal in synchronization with a clock. The information processing terminal (6) converts the reception digital baseband signal into a reception data in synchronization with a clock, and a transmission data into a transmission digital baseband signal in synchronization with the clock. The transmitting and receiving unit (5) converts the transmission digital baseband signal into a transmission analog baseband signal in synchronization with the clock. The transmitting and receiving unit (5) converts the transmission analog baseband signal into a transmission modulation wave signal to output to the network.

Claims

1. A radio system comprising:

a radio unit; and

a signal processing unit provided separately from said radio unit,

wherein said radio unit comprises;

a reception signal converting circuit configured to generate a reception digital signal from a reception radio signal;

a clock generating circuit configured to generate a clock; and

a first interface configured to operate in response to said clock, and

said signal processing unit comprises;

a second interface connected with said first interface and configured to operate in response to said clock; and

a processing section configured to convert said reception digital signal supplied through said first and second interfaces,

wherein said signal processing unit further comprises;

a supply circuit configured to supply a transmission digital signal to said radio unit through said second interface, and

said radio unit further comprises;

a transmission signal converting circuit configured to generate a transmission radio signal from said transmission digital signal supplied through said first and second interfaces, and

wherein said reception signal converting circuit operates in response to said clock.

2. The radio system according to claim 1, wherein said processing section operates in response to said clock.

3. A radio system comprising:

a radio unit; and

a signal processing unit provided separately from said radio unit,

wherein said radio unit comprises;

a reception signal converting circuit configured to generate a reception digital signal from a reception radio signal;

a clock generating circuit configured to generate a clock; and

a first interface configured to operate in response to said clock, and

said signal processing unit comprises;

a second interface connected with said first interface and configured to operate in response to said clock; and

a processing section configured to convert said reception digital signal supplied through said first and second interfaces,

wherein said signal processing unit further comprises;

a supply circuit configured to supply a transmission digital signal to said radio unit through said second interface, and

said radio unit further comprises;

a transmission signal converting circuit configured to generate a transmission radio signal from said transmission digital signal supplied through said first and second interfaces.

4. The radio system according to claim 3, wherein said supply circuit operates in response to said clock.

5. The radio system according to claim 4, wherein said transmission signal converting circuit operates in response to said clock.

6. The radio system according to claim 3, wherein one of said first and second interfaces has a parallel bit converting function.

7. A radio system comprising:

a radio unit; and

a signal processing unit provided separately from said radio unit,

wherein said signal processing unit comprises;

a clock generating circuit configured to generate a clock,

said radio unit comprises;

a reception signal converting circuit configured to generate a reception digital signal from a reception radio signal; and

a first interface configured to operate in response to said clock, and

said signal processing unit further comprises;

a second interface connected with said first interface and configured to operate in response to said clock; and

a processing section configured to convert said reception digital signal supplied through said first and second interfaces,

wherein said signal processing unit further comprises;

a supply circuit configured to supply a transmission digital signal to said radio unit through said second interface, and

said radio unit further comprises;

a transmission signal converting circuit configured to generate a transmission radio signal from said transmission digital signal supplied through said first and second interfaces, and

wherein said reception signal converting circuit operates in response to said clock.

8. The radio system according to claim 7, wherein said processing section operates in response to said clock.

9. A radio system comprising:

a radio unit; and

a signal processing unit provided separately from said radio unit,

wherein said signal processing unit comprises;

a clock generating circuit configured to generate a clock,

said radio unit comprises;

a reception signal converting circuit configured to generate a reception digital signal from a reception radio signal; and

a first interface configured to operate in response to said clock, and

said signal processing unit further comprises;

a second interface connected with said first interface and configured to operate in response to said clock; and

a processing section configured to convert said reception digital signal supplied through said first and second interfaces,

wherein said signal processing unit further comprises;

a supply circuit configured to supply a transmission digital signal to said radio unit through said second interface, and

said radio unit further comprises;

a transmission signal converting circuit configured to generate a transmission radio signal from said transmission digital signal supplied through said first and second interfaces.

10. The radio system according to claim 9, wherein said supply circuit operates in response to said clock.

11. The radio system according to claim 10, wherein said transmission signal converting circuit operates in response to said clock.

12. The radio system according to claim 9, wherein one of said first and second interfaces has a parallel bit converting function.

13. A radio system comprising:

a radio unit; and

a signal processing unit provided separately from said radio unit,

wherein said radio unit comprises;

reception signal converting means for generating a reception digital signal from a reception radio signal;

clock generating means for generating a clock; and

first interface means for operating in response to said clock, and

said signal processing unit comprises;

second interface means connected with said first interface means for operating in response to said clock; and

processing means for converting said reception digital signal supplied through said first and second interface means,

wherein said signal processing unit further comprises;

a supply means for supplying a transmission digital signal to said radio unit through said second interface means, and

said radio unit further comprises;

a transmission signal converting means for generating a transmission radio signal from said transmission digital signal supplied through said first and second interface means.

14. A radio system comprising:

a radio unit; and

a signal processing unit provided separately from said radio unit,

wherein said signal processing unit comprises;

clock generating means for generating a clock,

said radio unit comprises;

reception signal converting means for generating a reception digital signal from a reception radio signal; and

first interface means for operating in response to said clock, and

said signal processing unit further comprises;

a second interface means connected with said first interface means, for operating in response to said clock; and

processing means for converting said reception digital signal supplied through said first and second interface means,

wherein said signal processing unit further comprises;

a supply means for supplying a transmission digital signal to said radio unit through said second interface means, and

said radio unit further comprises;

a transmission signal converting means for generating a transmission radio signal from said transmission digital signal supplied through said first and second interface means.